Attempted to fix intermittently failing #timer test.

Author: jdantonio

CHANGELOG.md

@@ -3,6 +3,7 @@
 * C extension for MRI have been extracted into the `concurrent-ruby-ext` companion gem.
   Please see the README for more detail.
 * Better variable isolation in `Promise` and `Future` via an `:args` option
+* Continued to update intermittently failing tests
 
 ## Current Release v0.7.2 (24 January 2015)
 

spec/concurrent/utility/timer_spec.rb

@@ -22,8 +22,7 @@ module Concurrent
       Concurrent::timer(0.1){ latch.count_down }
       latch.wait(1)
       diff = Time.now.to_f - start
-      expect(diff).to be > 0.1
-      expect(diff).to be < 0.5
+      expect(diff).to be_within(0.02).of(0.1)
     end
 
     it 'suppresses exceptions thrown by the block' do